Update app/main.py

app/main.py

@@ -39,7 +39,7 @@ async def speak(text: str):
 
     os.rename(path, cache_path)
 
-    with open(path, "rb") as f:
+    with open(cache_path, "rb") as f:
         audio_bytes = f.read()
 
     return Response(content=audio_bytes, media_type="audio/wav")